Anti-falling clamping ring hard alloy drill bit

Abstract

The utility model discloses an anti-falling snap ring hard alloy drill bit which comprises a drill bit body, the drill bit body comprises a connecting end connected with a crushing assembly in a clamped mode and a snap ring assembly connected with the connecting end in a rotating mode, and the bottom end of the connecting end is provided with internal threads facilitating fixing. The clamping ring assembly comprises a first clamping ring and a second clamping ring connected with the first clamping ring in a clamped mode, external threads facilitating fixing are arranged at the bottom end of the second clamping ring and the bottom end of the first clamping ring, a rotating rod rotating relative to the rotating groove is arranged on the inner side of the first clamping ring and located at the top ends of the external threads, and the rotating rod is also fixedly arranged on the inner side of the second clamping ring. According to the drill bit, the connecting end is rotated, the internal threads at the bottom end of the connecting end are fixed, then the clamping ring assembly is rotated reversely, the drill bit is fixed through the external threads in the clamping ring assembly, and the internal threads and the external threads are fixed in opposite directions, so that the fixing stability of the drill bit is improved, and the falling condition is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clamp ring carbide drill equipment, in particular to an anti-falling clamp ring carbide drill. Background Art

[0002] A carbide drill with a retaining ring is a drill used for metal processing. It is usually made of cobalt-based or nickel-based carbide. This drill is characterized by high hardness and wear resistance and is suitable for high-speed cutting in drilling operations. Carbide drills with a retaining ring are usually divided into thread drills, center drills, and reaming drills.

[0003] The retaining ring carbide drill has a high cutting speed and processing efficiency and can quickly complete the drilling task. However, most retaining ring carbide drills are usually fixed in a separate manner, which causes the vibration generated by the retaining ring carbide drill during operation to cause the connection to be unstable and fall off, reducing the use of the retaining ring carbide drill. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that most of the existing clamping ring carbide drill bits are usually fixed in a separate fixing method, so that the vibration generated by the clamping ring carbide drill bit during operation causes the connection to be unstable and fall off, reduce the use problems of the clamping ring carbide drill bit, and provide a clamping ring carbide drill bit that prevents it from falling off.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a carbide drill bit with an anti-falling retaining ring, comprising a drill bit, the drill bit comprising a connecting end clamped with a crushing assembly and a retaining ring assembly rotatably connected to the connecting end, the bottom end of the connecting end is provided with an internal thread for easy fixation, the retaining ring assembly comprises a first retaining ring and a second retaining ring clamped with the first retaining ring, and the second retaining ring and the bottom ends of the first retaining ring are both provided with external threads for easy fixation, a rotating rod rotating with a rotating groove is provided on the inner side of the first retaining ring and at the top end of the external thread, and the rotating rod is also fixed on the inner side of the second retaining ring, and the rotating groove is opened at the bottom end of the connecting end and at the top end of the internal thread.

[0006] As a further solution of the utility model: one end of the first clamping ring is fixedly connected with a clamping block clamped and fixed with the clamping groove, and the clamping block is symmetrically fixedly connected to one end of the first clamping ring, and the clamping groove is symmetrically opened at one end of the second clamping ring.

[0007] As a further solution of the utility model: a limiting screw hole for increasing the fixing stability is opened at one end of the slot, and the limiting screw hole is symmetrically opened at one end of the slot, and the limiting screw hole is also symmetrically opened at one end of the block.

[0008] As a further solution of the utility model: a limiting screw rod is inserted into one end of the limiting screw hole for fixing, and the limiting screw rod passes through the limiting screw holes at both ends of the card slot and the card block for fixing.

[0009] As a further solution of the utility model: the crushing assembly includes a drill core, the outer periphery of the drill core is fixedly connected with a fixing rod fixed to the L-shaped rotating slot, and the fixing rod is evenly fixed around the outer periphery of the drill core, and the L-shaped rotating slot is evenly opened around the inner side of the connecting end.

[0010] As a further solution of the utility model: a wear-resistant lining plate for reducing fixed sliding is arranged at one end of the fixing rod, and the wear-resistant lining plate is symmetrically fixed to both ends of the fixing rod.

[0011] As a further solution of the utility model: the internal thread at the bottom end of the connecting end rotates in the opposite direction to the external thread inside the clamping ring assembly.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the staff needs to fix the drill bit, the utility model firstly rotates the rotating rod and the rotating groove to connect the clamping ring assembly with the drill bit, and fixes the first clamping ring and the second clamping ring through the clamping block and the clamping groove. The first clamping ring and the second clamping ring can be conveniently replaced according to the usage through the clamping block and the clamping groove. Then, the limiting screw passes through the clamping groove and the clamping block to fix the first clamping ring and the second clamping ring, thereby increasing the stability of the fixation;

[0014] 2. Then insert the drill core into the L-shaped rotating slot at the inner end of the connection end through the fixing rod. When it is inserted to the bottom of the L-shaped rotating slot, rotate the drill core to quickly fix the drill core to the connection end. At the same time, the wear-resistant lining plates at both ends of the fixing rod can increase the friction between the drill core and the connection end, thereby increasing the stability of the fixation.

[0015] 3. Rotate the connection end to fix the internal thread at the bottom of the connection end. Then rotate the retaining ring assembly in the opposite direction to fix it through the external thread inside the retaining ring assembly. The dual fixation of the internal and external threads in opposite directions increases the stability of the drill bit fixation and reduces the possibility of it falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the explosion structure of the drill bit of the utility model;

[0018] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the connection end of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the clamping ring assembly of the utility model.

[0021] In the figure: 1. drill bit; 11. connecting end; 12. L-shaped rotating slot; 13. internal thread; 14. rotating slot; 2. crushing assembly; 21. drill core; 22. fixing rod; 23. wear-resistant lining; 3. retaining ring assembly; 31. first retaining ring; 32. second retaining ring; 33. rotating rod; 34. external thread; 35. slot; 36. clamping block; 37. limiting screw hole; 38. limiting screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of the embodiments of the present utility model based on the overall structure of the present utility model.

[0024] Reference Figures 1 to 5In an embodiment of the utility model, a carbide drill bit with an anti-falling retaining ring includes a drill bit 1. The drill bit 1 includes a connecting end 11 clamped with a crushing assembly 2 and a retaining ring assembly 3 rotatably connected to the connecting end 11. The bottom end of the connecting end 11 is provided with an internal thread 13 for easy fixation. The retaining ring assembly 3 includes a first retaining ring 31 and a second retaining ring 32 clamped with the first retaining ring 31, and the bottom ends of the second retaining ring 32 and the first retaining ring 31 are both provided with external threads 34 for easy fixation. A rotating rod 33 rotating with a rotating groove 14 is provided on the inner side of the first retaining ring 31 and at the top end of the external thread 34, and the rotating rod 33 is also fixed on the inner side of the second retaining ring 32. The rotating groove 14 is opened at the bottom end of the connecting end 11 and at the top end of the internal thread 13. The internal thread 13 at the bottom end of the connecting end 11 rotates in opposite directions to the external thread 34 inside the retaining ring assembly 3.

[0025] Reference Figure 2 and Figure 5 One end of the first snap ring 31 is fixedly connected with a block 36 that is fixed with the slot 35, and the block 36 is symmetrically fixed to one end of the first snap ring 31, and the slot 35 is symmetrically opened at one end of the second snap ring 32, and one end of the slot 35 is opened with a limiting screw hole 37 for increasing the fixing stability, and the limiting screw holes 37 are symmetrically opened at one end of the slot 35, and the limiting screw holes 37 are also symmetrically opened at one end of the block 36, and one end of the limiting screw hole 37 is inserted with a limiting screw 38 for fixing, and the limiting screw 38 passes through the limiting screw holes 37 at both ends of the slot 35 and the block 36 for fixing.

[0026] Reference Figures 2 to 4 The crushing assembly 2 includes a drill core 21, and a fixed rod 22 fixed to the L-shaped rotating slot 12 is fixedly connected to the outer periphery of the drill core 21, and the fixed rod 22 is evenly fixed around the outer periphery of the drill core 21, and the L-shaped rotating slot 12 is evenly opened around the inner side of the connecting end 11, and a wear-resistant lining 23 is provided at one end of the fixed rod 22 to reduce fixed sliding, and the wear-resistant lining 23 is symmetrically fixed to both ends of the fixed rod 22.

[0027] The working principle of the utility model is as follows: when the staff needs to fix the drill bit 1, first the rotating rod 33 and the rotating groove 14 are used to rotate and connect the clamping ring assembly 3 and the drill bit 1, and the first clamping ring 31 and the second clamping ring 32 are fixed by the clamping block 36 and the clamping groove 35. The first clamping ring 31 and the second clamping ring 32 can be conveniently replaced according to the usage through the clamping block 36 and the clamping groove 35. Then, the limiting screw 38 is passed through the clamping groove 35 and the clamping block 36 to fix the first clamping ring 31 and the second clamping ring 32 to increase the stability of the fixation. Then, the drill core 21 is inserted into the L-shaped rotating part at the inner end of the connecting end 11 through the fixing rod 22. The movable slot 12, when inserted to the bottom end of the L-shaped rotating slot 12, rotate the drill core 21 to quickly fix the drill core 21 to the connecting end 11. At the same time, the wear-resistant linings 23 at both ends of the fixing rod 22 can increase the friction between the drill core 21 and the connecting end 11, thereby increasing the stability of the fixation. Then, the connecting end 11 is rotated to fix the internal thread 13 at the bottom end of the connecting end 11. Then, the retaining ring assembly 3 is rotated in the opposite direction and fixed by the external thread 34 inside the retaining ring assembly 3. The double fixation of the internal thread 13 and the external thread 34, and the fixing directions are opposite, thereby increasing the stability of the fixation of the drill bit 1 and reducing the possibility of falling off.

[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A carbide drill bit with an anti-falling retaining ring, characterized in that: The drill bit (1) comprises a connecting end (11) clamped with a crushing assembly (2) and a clamping ring assembly (3) rotatably connected to the connecting end (11); the bottom end of the connecting end (11) is provided with an internal thread (13) for easy fixation; the clamping ring assembly (3) comprises a first clamping ring (31) and a second clamping ring (32) clamped with the first clamping ring (31); the bottom ends of the second clamping ring (32) and the first clamping ring (31) are both provided with external threads (34) for easy fixation; a rotating rod (33) is provided on the inner side of the first clamping ring (31) and at the top end of the external thread (34) for rotating with a rotating groove (14); the rotating rod (33) is also fixed on the inner side of the second clamping ring (32); the rotating groove (14) is opened at the bottom end of the connecting end (11) and at the top end of the internal thread (13).

2. The anti-dropping retaining ring cemented carbide drill according to claim 1, characterized in that: One end of the first clamping ring (31) is fixedly connected to a clamping block (36) that is clamped and fixed to the clamping groove (35), and the clamping block (36) is symmetrically fixedly connected to one end of the first clamping ring (31), and the clamping groove (35) is symmetrically opened at one end of the second clamping ring (32).

3. The anti-dropping retaining ring cemented carbide drill according to claim 2, characterized in that: A limiting screw hole (37) for increasing the fixing stability is provided at one end of the clamping slot (35), and the limiting screw hole (37) is symmetrically provided at one end of the clamping slot (35), and the limiting screw hole (37) is also symmetrically provided at one end of the clamping block (36).

4. The anti-drop-off retaining ring cemented carbide drill according to claim 3, characterized in that: A limiting screw rod (38) is inserted into one end of the limiting screw hole (37) for fixing, and the limiting screw rod (38) passes through the limiting screw holes (37) at both ends of the clamping slot (35) and the clamping block (36) for fixing.

5. The anti-dropping retaining ring cemented carbide drill bit according to claim 1, characterized in that: The crushing assembly (2) comprises a drill core (21), the outer periphery of which is fixedly connected a fixing rod (22) fixed to an L-shaped rotating slot (12), and the fixing rod (22) evenly surrounds the outer periphery of the drill core (21), and the L-shaped rotating slot (12) evenly surrounds the inner side of the connection end (11).

6. The anti-drop-off retaining ring cemented carbide drill bit according to claim 5, characterized in that: One end of the fixed rod (22) is provided with a wear-resistant lining plate (23) for reducing fixed sliding, and the wear-resistant lining plate (23) is symmetrically fixed to both ends of the fixed rod (22).

7. The anti-dropping retaining ring cemented carbide drill bit according to claim 1, characterized in that: The internal thread (13) at the bottom end of the connection end (11) and the external thread (34) inside the clamping ring assembly (3) rotate in opposite directions.

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